uart tx interrupt

[Melika]

Hi every one.i need to handle tx uart interrupt and i write this code,but i get error.How can i solve this?my esp idf version is 4.4.6
my code:

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1. #include "nvs_flash.h"
2. #include "nvs.h"
3. #include <string.h>
4. #include "freertos/FreeRTOS.h"
5. #include "freertos/task.h"
6. #include "esp_netif.h"
7. #include "esp_wifi.h"
8. #include "esp_event.h"
9. #include "esp_log.h"
10. #include "driver/gpio.h"
11. #include "lwip/err.h"
12. #include "lwip/sys.h"
13. #include "esp_log.h"
14. #include "esp_event.h"
15. #include "freertos/event_groups.h"
16. #include "sdkconfig.h"
17. #include <unistd.h>
18. #include <sys/socket.h>
19. #include <stdio.h>
20. #include <errno.h>
21. #include <netdb.h>            // struct addrinfo
22. #include <arpa/inet.h>
23. #include "driver/uart.h"
24. #include "esp_system.h"
25. #include "esp_intr_alloc.h"
26. #include "soc/uart_reg.h"
27. #include "soc/uart_struct.h"
28. #include <sys/time.h>
29. #include "esp_attr.h"
30. #include "soc/uart_periph.h"
31. #include "soc/uart_struct.h"
32. #include "hal/uart_types.h"
33. #include "hal/uart_ll.h"   //for status iin
34.  
35.  
36.  
37. static const char *TAG = "uart_events";
38.  TaskHandle_t HandleCore0= NULL;
39. #define EX_UART_NUM UART_NUM_0
40. #define PATTERN_CHR_NUM    (3)         /*!< Set the number of consecutive and identical characters received by receiver which defines a UART pattern*/
41.  
42. #define BUF_SIZE (1024)
43. static QueueHandle_t uart0_queue;
44. //static uart_isr_handle_t *handle_console;
45. static intr_handle_t handle_console;
46. static uart_obj_t *p_uart[UART_NUM_MAX] = {0};
47. bool Send=false;
48. static void uart_event_task(void *pvParameters)
49. {
50.     const char a="hello";
51.      while(1)
52.      {
53.              int size=5;
54.            vTaskDelay(pdMS_TO_TICKS(500));
55.  
56.           if(Send)
57.           {
58.             xSemaphoreTake(p_uart[EX_UART_NUM]->tx_mux, (portTickType)portMAX_DELAY);
59.             p_uart[EX_UART_NUM]->coll_det_flg = false;
60.             int offset = 0;
61.             uart_tx_data_t evt;
62.             evt.tx_data.size = size;
63.             evt.tx_data.brk_len = 0;
64.             evt.type = UART_DATA;
65.             xRingbufferSend(p_uart[EX_UART_NUM]->tx_ring_buf, (void *) &evt, sizeof(uart_tx_data_t), portMAX_DELAY);
66.             xRingbufferSend(p_uart[EX_UART_NUM]->tx_ring_buf, (void *) (a), size, portMAX_DELAY);
67.             xSemaphoreGive(p_uart[EX_UART_NUM]->tx_mux);
68.             Send=false;
69.           }
70.           vTaskDelay(pdMS_TO_TICKS(500));
71.       }
72.    
73.  
74. }
75. /*
76.  * Define UART interrupt subroutine to ackowledge interrupt
77.  */  
78. static void IRAM_ATTR uart_intr_handle(void *arg)
79. {
80.   uint16_t rx_fifo_len, status;
81.   status = UART0.int_st.val; // read UART interrupt Status
82.   int i=0;
83.    if(status == UART_INTR_TXFIFO_EMPTY)   //if we have tx interrupt
84.    {
85.      Send=true;
86.      uart_clear_intr_status(EX_UART_NUM,UART_INTR_TXFIFO_EMPTY);
87.    }
88. }
89.  
90.  
91. void app_main()
92. {
93.     int ret;
94.     esp_log_level_set(TAG, ESP_LOG_INFO);
95.     uart_config_t uart_config = {
96.         .baud_rate = 115200,
97.         .data_bits = UART_DATA_8_BITS,
98.         .parity = UART_PARITY_DISABLE,
99.         .stop_bits = UART_STOP_BITS_1,
100.         .flow_ctrl = UART_HW_FLOWCTRL_DISABLE
101.     };
102.  
103.     ESP_ERROR_CHECK(uart_param_config(EX_UART_NUM, &uart_config));
104.     esp_log_level_set(TAG, ESP_LOG_INFO);
105.     ESP_ERROR_CHECK(uart_set_pin(EX_UART_NUM, UART_PIN_NO_CHANGE, UART_PIN_NO_CHANGE, UART_PIN_NO_CHANGE,
106.       UART_PIN_NO_CHANGE));
107.     ESP_ERROR_CHECK(uart_driver_install(EX_UART_NUM, BUF_SIZE*2, BUF_SIZE*2,10, uart0_queue, 0));
108.     ESP_ERROR_CHECK(uart_isr_free(EX_UART_NUM));
109.     ESP_ERROR_CHECK(uart_isr_register(EX_UART_NUM,uart_intr_handle, NULL, ESP_INTR_FLAG_IRAM, &handle_console));
110.         ESP_ERROR_CHECK(uart_enable_tx_intr(EX_UART_NUM, 1, 1));
111.        xTaskCreate(uart_event_task, "uart_event_task", 4096, NULL, 10, NULL);
112.  
113.   }
114.    
115.  

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and my error:

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1. Guru Meditation Error: Core  0 panic'ed (Interrupt wdt timeout on CPU0).
2.  
3. Core  0 register dump:
4. PC      : 0x40085c2b  PS      : 0x00060034  A0      : 0x80085bcc  A1      : 0x3ffb1040
5. 0x40085c2b: uart_ll_clr_intsts_mask at C:/Users/user/esp/esp-idf/components/hal/esp32/include/hal/uart_ll.h:199
6. (inlined by) uart_clear_intr_status at C:/Users/user/esp/esp-idf/components/driver/uart.c:366
7.  
8. A2      : 0x3ff40000  A3      : 0x00000002  A4      : 0x80091178  A5      : 0x3ffb5810
9. A6      : 0x00000003  A7      : 0x3ffb1040  A8      : 0x00060920  A9      : 0x00000000
10. A10     : 0xffffffff  A11     : 0x3ffb5800  A12     : 0x80084fa0  A13     : 0x3ffb57d0
11. A14     : 0x00000000  A15     : 0x00008000  SAR     : 0x00000011  EXCCAUSE: 0x00000005
12. EXCVADDR: 0x00000000  LBEG    : 0x00000000  LEND    : 0x00000000  LCOUNT  : 0x00000000
13. Core  0 was running in ISR context:
14. EPC1    : 0x400d1f17  EPC2    : 0x00000000  EPC3    : 0x00000000  EPC4    : 0x40085c2b
15. 0x400d1f17: panic_print_char_uart at C:/Users/user/esp/esp-idf/components/esp_system/panic.c:80
16.  
17. 0x40085c2b: uart_ll_clr_intsts_mask at C:/Users/user/esp/esp-idf/components/hal/esp32/include/hal/uart_ll.h:199
18. (inlined by) uart_clear_intr_status at C:/Users/user/esp/esp-idf/components/driver/uart.c:366
19.  
20.  
21.  
22. Backtrace: 0x40085c28:0x3ffb1040 0x40085bc9:0x3ffb1090 0x4008532d:0x3ffb10d0 0x400ebdfd:0x3ffb5850 0x400e0775:0x3ffb5870 0x400df3e5:0x3ffb5890 0x4008fda3:0x3ffb58c0
23. 0x40085c28: uart_ll_clr_intsts_mask at C:/Users/user/esp/esp-idf/components/hal/esp32/include/hal/uart_ll.h:199
24. (inlined by) uart_clear_intr_status at C:/Users/user/esp/esp-idf/components/driver/uart.c:366
25.  
26. 0x40085bc9: uart_intr_handle at C:/Users/user/Desktop/uart_async_rxtxtasks/main/uart_async_rxtxtasks_main.c:116
27.  
28. 0x4008532d: _xt_lowint1 at C:/Users/user/esp/esp-idf/components/freertos/port/xtensa/xtensa_vectors.S:1114
29.  
30. 0x400ebdfd: cpu_ll_waiti at C:/Users/user/esp/esp-idf/components/hal/esp32/include/hal/cpu_ll.h:183
31.  
32. 0x400e0775: esp_pm_impl_waiti at C:/Users/user/esp/esp-idf/components/esp_pm/pm_impl.c:847
33.  
34. 0x400df3e5: esp_vApplicationIdleHook at C:/Users/user/esp/esp-idf/components/esp_system/freertos_hooks.c:63
35.  
36. 0x4008fda3: prvIdleTask at C:/Users/user/esp/esp-idf/components/freertos/tasks.c:3987 (discriminator 1)

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[MicroController]

How can i solve this?

You could just use the IDF's UART driver, either synchronously or event-based.

[Melika]

You could just use the IDF's UART driver, either synchronously or event-based.

Hi thanks for answer.How can i use it?

[MicroController]

Take one of the examples and adapt it to your needs.